In some senses yes, but the other team is a) given equal speaking time, b) can argue that it’s nothing but a gish gallop and most importantly, the other team’s arguments still have to rise to he level of “argument” as in the have a claim, at least one warrant for that claim and can explain why that wins them the round. It’s. While dumb dropped argument certainly do win rounds no body really winning on “we win because we said so”. Judges will also generally give the opposing team a lot of leeway in giving shorter or grouped responses to low quality arguments.

It's precisely a gish gallop. Unfortunately, in this format of debate, busting out a well known logical fallacy or poor form of argument is not necessarily penalized.